JNV-GENERAL SCIENCE CLASS 9th (2019)

Questions in this test

1. Which one of the following is not an essential condition to grow maize?
2. Which of the following tools is used by the farmer to remove weeds from the field
3. Pathogenic microorganisms present in host cells are killed by ________ medicines.
4. Penicillin was discovered by
5. Polycot is obtained by mixing.
6. Aqueous solution of which of the following oxides turns blue litmus red?
7. Which one of the following is used for making crackers?
8. Naphthalene balls are obtained from
9. Coal is formed from the remains of
10. When coal burns in air ______ gas is mainly produced.
11. The process of separating the various constituents of petroleum is known as
12. Which of the following is an exhaustible natural resource?
13. _________ is meant for the conservation of biodiversity in their natural habitat.
14. Clearing of large patches of forests for the cultivation of crops may lead to.
15. Which of the following is found in an animal cell but not in a plant cell?
16. Chromosomes are present in
17. Which one of the following is oviparous?
18. Two cells that fuse to give zygote are called _______.
19. ______should be present in the water for the metamorphosis of tadpoles.
20. Deficiency of thyroxine in the body causes.
21. While walking on the ground we apply force on
22. In preparing a chapati from dough _______ force is applied.
23. Mobil oil is applied on iron shutters to ________ friction.
24. The surface of mortar and pestle $(silbatta)$ used for grinding is etched again after long use to ________ friction.
25. To increase loudness of sound _______ of vibration of sound.
26. If we listen to the sound of lightning 10, after observing, it how far are we from the place where lightening occurs? $(take$, $speed$ $of$ $sound$ = $330m/s)$
27. Electric current can produce ______ effect.
28. In which of the following solutions conduction of electricity will not take place?
29. The movement of the earth’s plates can cause
30. The outermost layer of earth is called
31. The planet Venus appears in the _______ sky before sunrise.
32. Hari saw a full moon on a particular day. After_______ days he will be able to see the full moon again.
33. Which of the following is a greenhouse gas?
34. The occasion of tree plantation in July/August is called
35. The Acid rain contains ______ in more quantity.